40444243999 has 16 divisors (see below), whose sum is σ = 43353936000. Its totient is φ = 37614443040.

The previous prime is 40444243991. The next prime is 40444244003. The reversal of 40444243999 is 99934244404.

It is a cyclic number.

It is not a de Polignac number, because 40444243999 - 2³ = 40444243991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444243991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804009 + ... + 852829.

It is an arithmetic number, because the mean of its divisors is an integer number (2709621000).

Almost surely, 2^40444243999 is an apocalyptic number.

40444243999 is a deficient number, since it is larger than the sum of its proper divisors (2909692001).

40444243999 is a wasteful number, since it uses less digits than its factorization.

40444243999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49638.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 40444243999 in words is "forty billion, four hundred forty-four million, two hundred forty-three thousand, nine hundred ninety-nine".